parser tree

function parseDB(src, dst){
  var fulldata = fs.readFileSync(src).toString(); // db is path name of the database
  var samples = fulldata.split('\n');
  samples = samples.slice(0, samples.length-1);
  var dbSamples = [];
  var i;

  _.each(samples, function (data, idx) {
    var lSample = data.split('\t');
    var sample = {
      letter: lSample[1]
    }
    var j = 0;
    for (i = 6; i < 134; i++) {
      px = 'px'+j;
      pixel = parseInt(lSample[i].replace(/[\n\t\r]/g, ''));
      sample[px.toString()] = (pixel === 0 ? false : true); // convert zeros and ones into false or true.
      j++;
    }
    dbSamples.push(sample);
  });
  fs.appendFileSync(dst, JSON.stringify(dbSamples), {encoding: 'utf8', flag: 'w'}); // save array in proccess.data as a json

  console.log('File was saved successfully');
}

// MAIN
var src = './data-set/letter.data';
var dst = './data-set/parser.data';
parseDB(src, dst);